Lawn-trimmer



N M d 1. W) 50.3105.

LAWN TRIMMER.

No. 470,950. Patented Mar. 15, 1892.

UNITED STATES MATENT OFFICE.

HENRY C. RICE, OF FARMINGTON, CONNECTICUT.

LAWN-TRIMMER.

SPECIFICATION forming part of Letters Patent No. 470,950, dated March15, 1892.

Application filed September 2, 1891. Serial No- 404,540. (No model.)

To all whom it 'may concern.-

Be it known that I, HENRY C. RICE, of Farmington, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Lawn-Trimmers; and I do hereby declare the following tobe afull, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in lawn-trim mers; and itconsists in certain novel features of construction and in the combination and arrangement of parts, all of which will be fully describedhereinafter, and more particularly referred to in the claims.

The object of my invention is to construct a machine which is adapted totrim the edges of paths and flower-beds, and which is very compact,being supported on one wheel and within a single frame.

Figure 1 is a plan view of my improved machine. Fig.2 is a sideelevation of the same. Fig. 3 is a perspective view taken from the underside of the machine, showing the position of the cutting-plate K. Fig.4. is a sectional view on line a: 00 of Fig. 2.

A represents a wheel, which bears upon the ground and which is providedwith the central projection 13. The frame C is supported on the wheel Aby means of the inwardly-projecting bolt D, which bears in an opening inthe projection B. The inner side of the frame is provided with flangesE, which form bearings for the shaft F. Mounted upon the shaft are theheads G, to which the knives H are secured. On one end of the shaftF isthe pinion H, which engages the cogs I on the inner side of the wheel A.Supported within the frame upon the projecting bolts J is thecuttingplate K, against which the knives hear when cutting the grass.The pitch or angle of the plate is regulated by the set-screwsL M, whichbear against the opposite sides of the plate. By means of thisconstruction it will be seen that a perfectly-fiat plate can be used,being held in any desired adjustment by the setscrews. The forward endof the inner side of the frame is turned upward to form a nose N,

and to the rear end of the frame is secured a handle in any suitablemanner.

In operation the wheel isrun along the path near its edge. from beingstopped suddenly by an obstruction, giving it a tendency to pass orslide over between the knives and the plate K.

Having thus described my invention, I claim 1. In a lawn-trimmer, thecombination, with a wheel provided with cogs on one side, of a framesupported on the wheel, a knife-carrying shaft journaled in the frameacross the axial line of the said wheel, a pinion on said shaft which isengaged by the cogs of the wheel, and a stationary cutting-edge,substantially as shown and described.

2. In a lawn-trimmer, the combination, with a frame and a wheeljournaled in one side of and Within said frame, of bearings formed onthe opposite inner side of the frame, a knifecarrying shaft j ournaledtherein in a line with the path traveled by the trimmer and which isrevolved by the said wheel, and a stationary cutting-edge, substantiallyas shown and described.

3. In a lawn-trimmer, the combination, with a frame and a cogged wheel journaled therein to one of its sides, of a knife-carrying shaft alsojournaled within the frame across the axial line of the said wheel, apinion on the said shaft which is engaged by the cogged wheel,cutting-edge K, and set-screws L M, substantially as shown anddescribed.

4. In a lawn-trimmer, the combination, with the frame, a wheel journaledtherein, and a knife-carryingshaft operated by said wheel, ofprojections J, cutting-edge K, adapted to rest on said projections, andset-screws L M, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY C. RICE.

Witnesses:

D. A. PARSENS,

J. W. Rmcaosn.

any unevenness that may exist in the ground. As it is thus run along theprojecting grass on the edge of the lawn is cut by being caught The noseN prevents the frame

